Publish Vulpes Preview 15 sources for desktop, Android and Tundra

Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.

tundra/runtime/prepare-network.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: MPL-2.0
+"""Activate the Sargo WLAN driver after the read-only vendor mount exists."""
+from pathlib import Path
+import errno
+import time
+
+
+def main():
+    if 'tundra.rescue=1' not in Path('/proc/cmdline').read_text():
+        raise RuntimeError('Temporary Tundra boot required')
+    firmware = Path('/vendor/firmware')
+    if not firmware.is_dir():
+        raise RuntimeError('Vendor firmware not mounted')
+    Path('/sys/module/firmware_class/parameters/path').write_text(str(firmware))
+    boot = Path('/sys/kernel/boot_wlan/boot_wlan')
+    if boot.exists():
+        try:
+            boot.write_text('1\n')
+        except OSError as error:
+            if error.errno != errno.EALREADY:
+                raise
+    # pd-mapper publishes the Qualcomm WLAN protection domain. Its firmware
+    # can take a minute to start after the display HAL is ready.
+    for _ in range(180):
+        if Path('/sys/class/net/wlan0').exists():
+            return
+        time.sleep(.5)
+    wlan = Path('/dev/wlan')
+    if wlan.exists():
+        wlan.write_text('ON\n')
+    for _ in range(60):
+        if Path('/sys/class/net/wlan0').exists():
+            return
+        time.sleep(.5)
+    raise RuntimeError('Sargo WLAN driver did not expose wlan0')
+
+
+if __name__ == '__main__':
+    main()